1310645256 has 64 divisors (see below), whose sum is σ = 3401697600. Its totient is φ = 420311808.

The previous prime is 1310645201. The next prime is 1310645257. The reversal of 1310645256 is 6525460131.

It is not an unprimeable number, because it can be changed into a prime (1310645257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200715 + ... + 207141.

It is an arithmetic number, because the mean of its divisors is an integer number (53151525).

Almost surely, 2^1310645256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310645256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700848800).

1310645256 is an abundant number, since it is smaller than the sum of its proper divisors (2091052344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1310645256 is a wasteful number, since it uses less digits than its factorization.

1310645256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758 (or 6754 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1310645256 is about 36202.8349166194. The cubic root of 1310645256 is about 1094.3638029968.

The spelling of 1310645256 in words is "one billion, three hundred ten million, six hundred forty-five thousand, two hundred fifty-six".